Polygonation
利用导线来测量土地
🗣️ 情景例句
You probably heard about it. We have private teachers in our holiday.
或许你已经听说过。我们交大的学生在假期间做家教。
I've forgotten what he said his address was.
我忘记了他说他的地址是什么。
Yes, I feel tired all the time.
对，我总是感到累。